US2952991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High side pressure control for refrigeration systems
Assignee: Carrier Corp
•
Filing: 1959-02-20
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Granted: 1960-09-20
•
Expires: 1979-02-20
Abstract
No abstract record available.
Inventors
- 👤 Pierre John N St
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:40
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/02; F25B49/027; F25B2600/00; F25B2600/11; F25B2600/111; F25B2700/00; F25B2700/19; F25B2700/195; Y; Y02; Y02B; Y02B30/00; Y02B30/70; Y10; Y10S; Y10S62/00; Y10S62/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2705404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |